title: Letter by Dai et al regarding article, "cardiac resynchronization therapy in patients with heart failure and a QRS complex <120 milliseconds: the Evaluation of Resynchronization Therapy for Heart Failure (LESSER-EARTH) trial".
authors.affiliation: Department of Cardiology, Yan'an Affiliated Hospital of Kunming Medical University, Kunming, P.R. China.
authors.forename: Hailong
authors.initials: H
authors.lastname: Dai
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Guang
authors.forename: Zhicheng
authors.initials: Z
authors.lastname: Xiao
mesh_terms: D058406:Cardiac Resynchronization Therapy / Q000379:methods*; D005260:Female; D006333:Heart Failure / Q000503:physiopathology* / Q000628:therapy*; D006801:Humans; D008297:Male; D020257:Ventricular Remodeling / Q000502:physiology*